Pittsburgh Cancer Center Warns of Cell Phone Riskshttp://community.myeyewitnessnews.com/blogs/speakup/archive/2008/07/24/3230590.aspxPITTSBURGH (AP) - The head of a prominent cancer research institute issued an unprecedented warning to his faculty and staff Wednesday: Limit cell phone use because of the possible risk of cancer.  The warning from Dr. Ronald B. Herberman, directoren-USCommunityServer 2.0 (Build: 60217.2664)